Discovery: the role of glycan traits on cardiovascular risk estimates was tested on 3281 samples available. Having identified traits significantly associated with cardiovascular disease risk, we replicated them first, in an independent cohort, validated them in men, and then investigated whether any of these associations could be exclusively explained by any of the individual factors that constitute the ACC/AHA 10-y atherosclerotic cardiovascular disease (ASCVD) risk estimate. The traits that remained associated were then tested for association with presence of subclinical atherosclerosis adjusting for the potential confounders. A subanalysis was performed for the IgG glycan GP18 (% of FA2G2S1 glycan among IgG where FA2G2S1 is the 2-AB mono-sialylated-, galactosylated biantennary N-glycan, core-substituted with fucose), which is strongly negatively correlated with very-low-density lipoprotein (VLDL). ACC indicates American College of Cardiology; AHA, American Heart Association; GP, glycan peak; GlycA, glycoprotein acetylation; ORCADES, Orkney Complex Disease Study; NMR, nuclear magnetic resonance; and UPLC, ultra performance liquid chromatography.